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相关论文: Cosmic microwave background constraints on dark en…

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Non-linear evolution of density fluctuations yields secondary anisotropies in the cosmic microwave background (CMB), which are correlated with the same density fluctuations that can be measured by weak lensing (WL) surveys. We study the…

天体物理学 · 物理学 2009-11-13 Atsushi J. Nishizawa , Eiichiro Komatsu , Naoki Yoshida , Ryuichi Takahashi , Naoshi Sugiyama

We consider the weak lensing effect induced by linear cosmological perturbations on the cosmic microwave background (CMB) polarization anisotropies. We find that the amplitude of the lensing peak in the BB mode power spectrum is a faithful…

天体物理学 · 物理学 2009-11-13 Viviana Acquaviva , Carlo Baccigalupi

We consider the influence of the dark energy dynamics at the onset of cosmic acceleration on the Cosmic Microwave Background (CMB) bispectrum, through the weak lensing effect induced by structure formation. We study the line of sight…

天体物理学 · 物理学 2009-11-10 F. Giovi , C. Baccigalupi , F. Perrotta

The cosmic microwave background (CMB) bispectrum is a well-known probe of the non-Gaussianity of primordial perturbations. Just as the intervening large-scale structure modifies the CMB angular power spectrum through weak gravitational…

天体物理学 · 物理学 2008-11-26 Asantha Cooray , Devdeep Sarkar , Paolo Serra

We discuss the non-Gaussian contribution to the power spectrum covariance of cosmic microwave background (CMB) anisotropies resulting through weak gravitational lensing angular deflections and the correlation of deflections with secondary…

天体物理学 · 物理学 2009-11-07 Asantha Cooray

The weak lensing effect on the cosmic microwave background (CMB) induces distortions in spatial pattern of CMB anisotropies, and statistical properties of CMB anisotropies become a weakly non-Gaussian field. We first summarize the weak…

宇宙学与河外天体物理 · 物理学 2014-03-17 Toshiya Namikawa

The effect of weak gravitational lensing on the cosmic microwave background (CMB) temperature anisotropies and polarization will provide access to cosmological information that cannot be obtained from the primary anisotropies alone. We…

天体物理学 · 物理学 2007-05-23 Sarah Smith , Anthony Challinor , Graca Rocha

Weak gravitational lensing by the intervening large-scale structure (LSS) of the Universe is the leading non-linear effect on the anisotropies of the cosmic microwave background (CMB). The integrated line-of-sight mass that causes the…

宇宙学与河外天体物理 · 物理学 2023-04-26 Alba Kalaja , Giorgio Orlando , Aleksandr Bowkis , Anthony Challinor , P. Daniel Meerburg , Toshiya Namikawa

Upcoming stage 4 surveys, such as the Simons Observatory, LSST, and Euclid, are poised to measure weak gravitational lensing of the Cosmic Microwave Background (CMB) and galaxies with unprecedented precision. While the power spectrum is the…

宇宙学与河外天体物理 · 物理学 2026-05-07 Jonas Frugte , P. Daniel Meerburg

The anisotropies in the cosmic microwave background (CMB) provide our best laboratory for testing models of the formation and evolution of large-scale structure. The rich features in the cosmic microwave background anisotropy spectrum, in…

宇宙学与河外天体物理 · 物理学 2015-06-22 Zhen Pan , Lloyd Knox , Martin White

The cosmic microwave background (CMB) represents a unique source for the study of gravitational lensing. It is extended across the entire sky, partially polarized, located at the extreme distance of z=1100, and is thought to have the…

宇宙学与河外天体物理 · 物理学 2014-11-20 Duncan Hanson , Anthony Challinor , Antony Lewis

We investigate the accuracy attainable by forthcoming space-based observations of the cosmic microwave background (CMB) temperature and polarization anisotropy in constraining the dark energy density parameter $\Oq$ and equation of state…

天体物理学 · 物理学 2009-11-07 A. Balbi , C. Baccigalupi , F. Perrotta , S. Matarrese , N. Vittorio

We discuss detectability of the nonlinear growth of the large-scale structure in the cosmic microwave background (CMB) lensing. Lensing signals involved in CMB anisotropies have been measured from multiple CMB experiments, such as Atacama…

宇宙学与河外天体物理 · 物理学 2016-06-22 Toshiya Namikawa

The bispectrum of the cosmic microwave background (CMB) generated by a correlation between a time-dependent gravitational potential and the weak gravitational lensing effect provides a direct measurement of the influence of dark energy on…

宇宙学与河外天体物理 · 物理学 2013-05-30 Veronika Junk , Eiichiro Komatsu

We examine the cosmic microwave background (CMB) anisotropy for signatures of early quintessence dark energy -- a non-negligible quintessence energy density during the recombination and structure formation eras. In contrast to a…

天体物理学 · 物理学 2007-05-23 Christian M Mueller

All the analyses of Cosmic Microwave Background (CMB) temperature maps up--to--date show that CMB anisotropies follow a Gaussian distribution. On the other hand, astrophysical foregrounds which hamper the detection of the CMB angular power…

天体物理学 · 物理学 2008-11-26 F. Argüeso , J. González-Nuevo , L. Toffolatti

The cosmic microwave background (CMB) is gravitationally lensed by large-scale structure, which distorts observations of the primordial anisotropies in any given direction. Averaged over the sky, this important effect is routinely modelled…

宇宙学与河外天体物理 · 物理学 2021-03-17 G. Fabbian , J. Carron , A. Lewis , M. Lembo

The Cosmic Microwave Background (CMB) physics can be used to constrain the dark energy dynamics: B modes of the polarization of the diffuse CMB emission as well as the polarized signal towards clusters of galaxies are sensitive to the…

天体物理学 · 物理学 2007-05-23 Paola Andreani , Carlo Baccigalupi

Power spectra and cross-correlation measurements from the weak gravitational lensing of the cosmic microwave background (CMB) and the cosmic shearing of faint galaxies images will help shed light on quantities hidden from the CMB…

天体物理学 · 物理学 2009-07-09 Wayne Hu
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